CN111536036A

CN111536036A - Vacuum pump

Info

Publication number: CN111536036A
Application number: CN202010412044.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Maanshan Siboer Machinery Technology Service Co ltd
Current assignee: Maanshan Siboer Machinery Technology Service Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-08-14

Abstract

The invention discloses a vacuum pump which comprises a Roots vacuum pump body, a driving motor, a first driving wheel and a second driving wheel, wherein the driving motor is installed at the left end of the Roots vacuum pump body, the first driving wheel is arranged between the driving motor and the Roots vacuum pump body, the driving belt is arranged on the inner side of the first driving wheel, the second driving wheels are arranged at two ends of the driving belt, an installation shaft is arranged at the upper end of a second one-way valve plate, a scroll spring is arranged between the second one-way valve plate and the installation shaft, and the second one-way valve plate is connected with the Roots vacuum pump body through the scroll spring and the installation shaft. This vacuum pump, convenient when driving motor rotated, driving motor can promote the second drive wheel through first drive wheel and drive belt and carry out the rotation work, so be favorable to the second drive wheel to drive the cross axle and rotate, and the stripper plate on the convenient follow-up cross axle triggers relevant mechanism, finally reaches automatic water-cooled purpose.

Description

Vacuum pump

Technical Field

The invention relates to the technical field of vacuum pumps, in particular to a vacuum pump.

Background

The roots vacuum pump is one kind of vacuum pump, it is the lobe rotor that is equipped with two opposite direction synchronous revolution in the pump to indicate, between the rotors, there is tiny clearance and a mutual contactless varactor vacuum pump between rotor and the pump case inner wall, roots vacuum pump has obtained the test of long-term operation on devices such as petroleum, chemical industry, plastics, pesticide, steam turbine rotor dynamic balance, aerospace space simulation, so should widely popularize and apply at home, also extensively be used for industries such as petroleum simultaneously, chemical industry, metallurgy, weaving, the vacuum pump accessory is as the vacuum pump muffler, be used for the noise control of vacuum pump, but current roots vacuum pump can have following problem at the in-process that uses usually:

1. the existing Roots vacuum pump needs water cooling, after air sucked by an intermediate-stage or double-stage pump is compressed, the compressed air is transmitted through a combined silencer with comprehensive absorption and phase difference, and the compressed air can generate heat in the transmission process, so that water cooling heat dissipation is usually needed;

2. the water suction pipe is arranged at the air suction end of the single-stage or double-stage pump set and connected to the air inlet of the vacuum pump, water is sucked by the vacuum degree generated by the vacuum pump, the larger the vacuum degree is, the higher the water suction amount is, and when the vacuum degree in the pump body does not meet the requirement, water cooling can not be performed by pumping water, so that the cooling effect of the Roots vacuum pump is influenced.

Disclosure of Invention

The invention aims to provide a vacuum pump, which aims to solve the problems that the prior roots vacuum pump proposed in the background art needs water cooling, after air sucked by a middle-stage or double-stage pump is compressed, the compressed air can generate heat in the transmission process through the comprehensive absorption and the transmission of the combined silencer with phase difference, therefore, water cooling heat dissipation is usually required, while the traditional water cooling mode is to inject a small amount of water into the pump manually so as to eliminate the heat generated by the compressed air, the operation steps of the water cooling mode are relatively complicated, the suction water pipe is arranged at the suction end of the single-stage or double-stage pump set and is connected to the air inlet of the vacuum pump, water is sucked by the vacuum degree generated by the vacuum pump, the larger the vacuum degree is, the higher the suction water amount is, when the vacuum degree in the pump body does not meet the requirement, the water can not be pumped for water cooling, thereby influencing the cooling effect of the Roots vacuum pump.

In order to achieve the purpose, the invention provides the following technical scheme: a vacuum pump comprises a Roots vacuum pump body, a driving motor, a first driving wheel and a second driving wheel, wherein the driving motor is installed at the left end of the Roots vacuum pump body, the first driving wheel is arranged between the driving motor and the Roots vacuum pump body, the driving belt is arranged on the inner side of the first driving wheel, the second driving wheels are arranged at two ends of the driving belt and are connected with the first driving wheel through the driving belt, a transverse shaft is installed at the right side of the second driving wheel, a bearing plate is installed on the transverse shaft, the transverse shaft is connected with the Roots vacuum pump body through the bearing plate, a squeezing plate is installed on the transverse shaft, a push rod is arranged on the outer side of the squeezing plate and is installed on a cylinder body, the cylinder body is installed on the surface of the Roots vacuum pump body, a reset spring is arranged between the push rod and the cylinder body, the push rod is provided with a push plate, and the push plate is positioned on the inner side of the cylinder body. The utility model discloses a roots vacuum pump, including barrel, guide way, liquid storage barrel, first check valve plate, liquid filling hole, second check valve plate, vortex spring, mounting shaft, second check valve plate, mounting shaft, scroll spring, and second check valve plate passes through vortex spring and mounting shaft and vacuum pump roots body interconnect.

Preferably, the number of the second driving wheels and the number of the cross shafts are respectively 2, and the 2 second driving wheels and the cross shafts are symmetrically distributed on the outer side of the Roots vacuum pump body.

Preferably, the transverse shaft is connected with the second transmission wheel in a welding mode, and a penetrating type rotating structure is formed between the transverse shaft and the bearing plate.

Preferably, the extrusion plates are distributed on the transverse shaft at equal intervals, the extrusion plates are of a drop-shaped structure, and the extrusion plates correspond to the push rods.

Preferably, the push rod is in through connection with the cylinder, and the push rod forms a telescopic structure with the cylinder through the return spring.

Preferably, the number of the cylinders in each group is 4, and the cylinders are symmetrically distributed on the surface of the Roots vacuum pump body.

Preferably, the inner walls of the push plate and the cylinder body are mutually attached, the guide grooves are formed in the push plate at equal angles, and the push plate and the cylinder body form a sliding structure through the guide grooves and the guide rails.

Preferably, annotate the liquid hole and just cut open for the toper structure, and annotate the liquid outlet on liquid hole and the barrel and correspond each other.

Preferably, the second one-way valve plate and the roots vacuum pump body form a rotating structure through a scroll spring and a mounting shaft, and the mounting structure of the second one-way valve plate is the same as that of the first one-way valve plate.

Compared with the prior art, the invention has the beneficial effects that: the vacuum pump is provided with a vacuum pump,

1. when the driving motor rotates, the driving motor can push the second driving wheel to rotate through the first driving wheel and the driving belt, so that the second driving wheel is favorable for driving the cross shaft to rotate, a subsequent extrusion plate on the cross shaft is convenient to trigger a related mechanism, and the purpose of automatic water cooling is finally achieved;

2. when the cross shaft drives the extrusion plate to rotate, the water drop-shaped extrusion plate can push the push rod to move, so that the push rod can conveniently drive the push plate to slide on the inner side of the cylinder through the guide groove and the guide rail, water in the cylinder can be pushed to be extruded and sprayed, and the subsequent water cooling treatment of the Roots vacuum pump is facilitated;

3. moisture in the barrel receives can produce water pressure and carry out the top to the second check valve board and move the promotion after the extrusion, so make things convenient for the second check valve board to rotate through installation axle and scroll spring on roots vacuum pump and open, be favorable to moisture to pass and annotate the liquid hole and form water smoke and carry out the water-cooling heat dissipation and handle to roots vacuum pump body.

Drawings

FIG. 1 is a schematic view of the overall top-down structure of the present invention;

FIG. 2 is a schematic view of the connection structure of the cartridge and the liquid storage cartridge according to the present invention;

FIG. 3 is a schematic view of the internal structure of the barrel according to the present invention;

FIG. 4 is a schematic view of the connection structure of the extrusion plate and the cross shaft according to the present invention;

FIG. 5 is a schematic view of a second check valve plate and mounting shaft connection structure of the present invention;

FIG. 6 is a schematic view of a side-sectional connection structure of the push plate and the cylinder body.

In the figure: 1. a Roots vacuum pump body; 2. a drive motor; 3. a first drive pulley; 4. a transmission belt; 5. a second transmission wheel; 6. a horizontal axis; 7. a support plate; 8. a pressing plate; 9. a push rod; 10. a barrel; 11. a return spring; 12. pushing the plate; 13. a guide groove; 14. a guide rail; 15. a liquid outlet; 16. a liquid storage cylinder; 17. a first check valve plate; 18. a liquid injection hole; 19. a second check valve plate; 20. installing a shaft; 21. a scroll spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a vacuum pump comprises a Roots vacuum pump body 1, a driving motor 2, a first driving wheel 3 and a second driving wheel 5, wherein the driving motor 2 is installed at the left end of the Roots vacuum pump body 1, the first driving wheel 3 is arranged between the driving motor 2 and the Roots vacuum pump body 1, a driving belt 4 is arranged on the inner side of the first driving wheel 3, the two ends of the driving belt 4 are respectively provided with the second driving wheel 5, the second driving wheel 5 is mutually connected with the first driving wheel 3 through the driving belt 4, a transverse shaft 6 is installed on the right side of the second driving wheel 5, a supporting plate 7 is installed on the transverse shaft 6, the transverse shaft 6 is mutually connected with the Roots vacuum pump body 1 through the supporting plate 7, a Roots extrusion plate 8 is installed on the transverse shaft 6, a push rod 9 is arranged on the outer side of the extrusion plate 8, the push rod 9 is installed on, a return spring 11 is arranged between the push rod 9 and the cylinder 10, the push rod 9 is connected with the cylinder 10 through the return spring 11, a push plate 12 is mounted on the push rod 9, and the push plate 12 is located on the inner side of the cylinder 10. The marginal position of push pedal 12 has seted up the guide way 13, and the inboard of guide way 13 is provided with the guided way 14, the guided way 14 is installed on the inner wall of barrel 10, and push pedal 12 passes through guide way 13 and guided way 14 and barrel 10 interconnect, and liquid outlet 15 has been seted up on the barrel 10, liquid storage cylinder 16 is installed to the top of barrel 10, and the hookup location between liquid storage cylinder 16 and the barrel 10 installs first one-way valve plate 17, hookup location between barrel 10 and the roots vacuum pump body 1 has seted up annotates liquid hole 18, and install second one-way valve plate 19 in annotating liquid hole 18, the upper end of second one-way valve plate 19 is provided with installation axle 20, and be provided with scroll spring 21 between second one-way valve plate 19 and the installation axle 20, and second one-way valve plate 19 passes through scroll spring 21 and installation axle 20 and roots vacuum pump body.

The number of the second driving wheels 5 and the number of the transverse shafts 6 are 2, and the 2 second driving wheels 5 and the transverse shafts 6 are symmetrically distributed on the outer side of the Roots vacuum pump body 1, so that the second driving wheels 5 can drive the transverse shafts 6 to synchronously rotate when rotating, and the transverse shafts 6 can drive related structures to move to finally trigger the related structures;

the cross shaft 6 is in welded connection with the second driving wheel 5, and a through type rotating structure is formed between the cross shaft 6 and the bearing plate 7, so that when the bearing plate 7 stably supports the cross shaft 6, the bearing plate 7 can be prevented from interfering the cross shaft 6 to perform normal rotating motion;

the extrusion plates 8 are distributed on the cross shaft 6 at equal intervals, the extrusion plates 8 are of a water-drop structure, and the extrusion plates 8 correspond to the push rods 9, so that the cross shaft 6 can drive the extrusion plates 8 to synchronously rotate when the cross shaft 6 rotates, and finally the extrusion plates 8 can push the push rods 9 to synchronously move;

the push rod 9 is in through connection with the cylinder 10, and the push rod 9 forms a telescopic structure with the cylinder 10 through the return spring 11, so that the return spring 11 can conveniently push the push rod 9 to perform telescopic motion on the cylinder 10;

the two groups of the cylinders 10 are arranged, the number of each group of the cylinders 10 is 4, and the cylinders 10 are symmetrically distributed on the surface of the Roots vacuum pump body 1, so that the uniform water cooling of the Roots vacuum pump body 1 is facilitated, and the deformation of the shell of the Roots vacuum pump body 1 caused by the uneven heat dissipation is avoided;

the push plate 12 is mutually attached to the inner wall of the cylinder 10, the push plate 12 is provided with the guide groove 13 at an equal angle, and the push plate 12 and the cylinder 10 form a sliding structure through the guide groove 13 and the guide rail 14, so that the push plate 12 can smoothly slide in the cylinder 10 through the guide groove 13 and the guide rail 14, and the push plate 12 can conveniently push, extrude and spray the water in the cylinder 10;

the liquid injection hole 18 is positively cut into a conical structure, and the liquid injection hole 18 corresponds to the liquid outlet 15 on the barrel 10, so that moisture can conveniently pass through the liquid injection hole 18 with the conical structure for atomization and spraying, and the water cooling effect is improved;

the second one-way valve plate 19 forms a rotary structure with the roots vacuum pump body 1 through the scroll spring 21 and the mounting shaft 20, and the mounting structure of the second one-way valve plate 19 is the same as that of the first one-way valve plate 17, so that the first one-way valve plate 17 and the second one-way valve plate 19 can be conveniently rotated on the roots vacuum pump body 1 to be opened or closed through the scroll spring 21 and the mounting shaft 20.

The working principle is as follows: as shown in fig. 1, 2 and 3, moisture is first injected into the liquid storage 16 above the tub 10, then the liquid storage cylinder 16 is sealed, as shown in fig. 1, when the roots vacuum pump body 1 is started, the driving motor 2 drives the first driving wheel 3 to rotate, when the first driving wheel 3 rotates, the first driving wheel 3 drives the second driving wheel 5 to synchronously rotate through the driving belt 4, when the second transmission wheel 5 rotates, the second transmission wheel 5 drives the horizontal shaft 6 to rotate on the supporting plate 7, and as shown in fig. 1, 2 and 4, when the horizontal shaft 6 rotates, the horizontal shaft 6 drives the extrusion plate 8 to synchronously rotate, when the convex structure on the extrusion plate 8 rotates to the position of the push rod 9, the extrusion plate 8 pushes and extrudes the push rod 9;

as shown in fig. 2 and fig. 3, when the pushing plate 8 pushes and extrudes the pushing rod 9, the pushing rod 9 at this time can drive the pushing plate 12 to perform synchronous sliding motion on the inner side of the cylinder 10 through the guide groove 13 and the guide rail 14, at this time, the pushing plate 12 can extrude moisture in the cylinder 10, the extruded moisture can be discharged out of the cylinder 10 through the liquid outlet 15, the moisture discharged through the liquid outlet 15 can be injected into the liquid injection hole 18, and the moisture at this time can push the second one-way valve plate 19 in the liquid injection hole 18, at this time, the second one-way valve plate 19 can be rotated and opened through the mounting shaft 20 and the scroll spring 21 after being pushed, the moisture at this time can pass through the liquid injection hole 18 with a conical structure to be atomized and ejected, so as to facilitate the improvement of the water cooling effect of the roots vacuum pump;

according to the principle shown in fig. 1, 2, 4 and 5, when the horizontal shaft 6 drives the squeezing plate 8 to rotate and separate from the push rod 9, the return spring 11 at this time pushes the push rod 9 to extend out of the cylinder 10, so the push rod 9 at this time drives the push plate 12 to move synchronously, so the push plate 12 no longer squeezes the water in the cylinder 10, according to fig. 2, the push plate 12 slides rightwards in the inner side of the cylinder 10, the left end of the cylinder 10 is in a negative pressure state, so the scroll spring 21 pushes the second one-way valve plate 19 to rotate and close through the mounting shaft 20, according to fig. 3, under the negative pressure, the first one-way valve plate 17 rotates and opens downwards through the mounting shaft 20 and the scroll spring 21, so the water in the liquid storage cylinder 16 is filled into the cylinder 10 to be supplemented, until the squeezing plate 8 squeezes and pushes the push rod 9 again next time, therefore, moisture can pass through the liquid injection hole 18 to carry out water cooling treatment on the Roots vacuum pump body 1 again, and the vacuum pump is convenient to use.

It is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures to facilitate a simplified description of the present invention, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the scope of the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum pump, includes roots vacuum pump body (1), driving motor (2), first drive wheel (3) and second drive wheel (5), its characterized in that: the Roots vacuum pump is characterized in that a driving motor (2) is installed at the left end of a Roots vacuum pump body (1), a first driving wheel (3) is arranged between the driving motor (2) and the Roots vacuum pump body (1), a driving belt (4) is arranged on the inner side of the first driving wheel (3), second driving wheels (5) are arranged at two ends of the driving belt (4), the second driving wheels (5) are connected with the first driving wheel (3) through the driving belt (4), a transverse shaft (6) is installed on the right side of the second driving wheel (5), a bearing plate (7) is installed on the transverse shaft (6), the transverse shaft (6) is connected with the Roots vacuum pump body (1) through the bearing plate (7), an extrusion plate (8) is installed on the transverse shaft (6), a push rod (9) is arranged on the outer side of the extrusion plate (8), and the push rod (9) is installed on, the barrel body (10) is arranged on the surface of the Roots vacuum pump body (1), a return spring (11) is arranged between the push rod (9) and the barrel body (10), the push rod (9) is connected with the barrel body (10) through the return spring (11), a push plate (12) is arranged on the push rod (9), and the push plate (12) is positioned on the inner side of the barrel body (10); 2. the edge position of the push plate (12) is provided with a guide groove (13), the inner side of the guide groove (13) is provided with a guide rail (14), the guide rail (14) is installed on the inner wall of the cylinder body (10), the push plate (12) is connected with the cylinder body (10) through the guide groove (13) and the guide rail (14), the cylinder body (10) is provided with a liquid outlet (15), a liquid storage cylinder (16) is installed above the cylinder body (10), a first one-way valve plate (17) is installed at the connecting position between the liquid storage cylinder (16) and the cylinder body (10), a liquid injection hole (18) is formed at the connecting position between the cylinder body (10) and the Roots vacuum pump body (1), a second one-way valve plate (19) is installed in the liquid injection hole (18), an installation shaft (20) is arranged at the upper end of the second one-way valve plate (19), and a vortex spring (21) is arranged between the second one-way valve plate, and the second one-way valve plate (19) is connected with the Roots vacuum pump body (1) through a scroll spring (21) and a mounting shaft (20).

2. A vacuum pump according to claim 1, wherein: the number of the second driving wheels (5) and the number of the transverse shafts (6) are respectively 2, and the 2 second driving wheels (5) and the transverse shafts (6) are symmetrically distributed on the outer side of the Roots vacuum pump body (1).

3. A vacuum pump according to claim 1, wherein: the transverse shaft (6) is connected with the second transmission wheel (5) in a welding mode, and a penetrating type rotating structure is formed between the transverse shaft (6) and the bearing plate (7).

4. A vacuum pump according to claim 1, wherein: the extrusion plates (8) are distributed on the transverse shaft (6) at equal intervals, the extrusion plates (8) are of a drop-shaped structure, and the extrusion plates (8) correspond to the push rods (9).

5. A vacuum pump according to claim 1, wherein: the push rod (9) is in through connection with the cylinder body (10), and the push rod (9) forms a telescopic structure with the cylinder body (10) through the return spring (11).

6. A vacuum pump according to claim 1, wherein: the vacuum pump is characterized in that the number of the cylinders (10) is two, 4 cylinders are arranged in each group of the cylinders (10), and the cylinders (10) are symmetrically distributed on the surface of the Roots vacuum pump body (1).

7. A vacuum pump according to claim 1, wherein: the inner walls of the push plate (12) and the cylinder body (10) are mutually attached, the push plate (12) is provided with a guide groove (13) at an equal angle, and the push plate (12) and the cylinder body (10) form a sliding structure through the guide groove (13) and the guide rail (14).

8. A vacuum pump according to claim 1, wherein: annotate liquid hole (18) and just cut open for the toper structure, and annotate liquid hole (18) and liquid outlet (15) on barrel (10) and correspond each other.

9. A vacuum pump according to claim 1, wherein: the second one-way valve plate (19) and the Roots vacuum pump body (1) form a rotating structure through a vortex spring (21) and a mounting shaft (20), and the mounting structure of the second one-way valve plate (19) is the same as that of the first one-way valve plate (17).